ARM: CSR: initializing L2 cache

Signed-off-by: Rongjun Ying <rongjun.ying@csr.com>
Signed-off-by: Barry Song <baohua.song@csr.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/arch/arm/mach-prima2/Makefile b/arch/arm/mach-prima2/Makefile
index f2fba66..7af7fc0 100644
--- a/arch/arm/mach-prima2/Makefile
+++ b/arch/arm/mach-prima2/Makefile
@@ -4,3 +4,4 @@
 obj-y += rstc.o
 obj-y += prima2.o
 obj-$(CONFIG_DEBUG_LL) += lluart.o
+obj-$(CONFIG_CACHE_L2X0) += l2x0.o